html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

.container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
}

.header {
    height: 80px;
    background: #3192f8;
}

.body {
    display: flex;
    width: 100%;
    height: 100%;
}

.aside {
    width: 250px;
    background: lightgray;
    height: 100%;
}

.close {
    display: none;
}

.menu_list {
}

.menu_item {
    line-height: 28px;
    font-size: 20px;
    color: #3192f8;
    cursor: pointer;
}

.menu_expand_btn {
    font-weight: 700;
}

.content {
    width: 100%;
    height: 100%;
}

iframe {
    margin: 0;
    padding: 0;
    border: 0;
    width: 100%;
    height: 100%;
}

ul {
    list-style: none;
}